Maybe you're super-paranoid, or maybe you just want to sell your old device and have piece of mind. Either way, being able to delete data is a valuable skill. Here's everything you need to know about securely wiping hard drives (HDDs), solid state drives (SSDs), flash drives, and even iOS and Android devices.

Microsoft's much-hyped free upgrade offer for Windows 10 ended in 2016, right? Not exactly. The GWX tool may be gone, but all the other upgrade tools still work, and the end result is an apparently valid digital license. But those offers could end soon.